Formating fixes for csintro pages. (#440)

docs/courses/csintro/booleans/activity.md

@@ -188,7 +188,7 @@ input.onGesture(Gesture.Shake, () => {
 ``` 
 
 Try it out!
-Have the students play a few more rounds of the Double Coin Flip using their new Micro:bit Double Coin Flipper!
+Have the students play a few more rounds of the Double Coin Flip using their new micro:bit Double Coin Flipper!
  
 ## Boolean operator NOT in a Loop
 

docs/courses/csintro/booleans/project.md

@@ -319,7 +319,7 @@ if (player1Turn == true && Math.random(4) < 3) {
 **2 =** At least 1 Boolean variable is implemented in a meaningful way.<br/>
 **1 =** No Boolean variables are implemented.
 			 
-### Micro:bit program
+### micro:bit program
 
 **4 =** micro:bit program:<br/>
 `*` Uses Boolean variables in a way that is integral to the program.<br/>

docs/courses/csintro/booleans/unplugged.md

@@ -42,7 +42,7 @@ Have students flip their coins together, keeping track of the outcomes, perhaps
  
 Example:
 ```
-    Coin A   Coin B   Totals
+    Coin A  Coin B   Totals
     ========================
     Heads   Heads	 
     Heads   Tails